VULNERABILITY INTELLIGENCE

CVE-2026-56348

CVSS score9.1 CRITICAL
EPSS probability0.48%
CISA KEVNot currently listed
Published2026-06-22
Last modified2026-06-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Description

n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.

Weakness classification

  • disclosure@vulncheck.com: CWE-918

Primary references